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Action Spring
Lewis Machine & Tool
Retail: $7.00
Price: $5.40
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Availability: In Stock
Lewis Machine & Tool Item #: LMT LMP262A -

    Buffer spring as used with our SOPMOD buttstock or standard collapsing buttstock.

    AM-10 Buffer Tube Kit
    Anderson Manufacturing
    Retail: $56.43
    Price: $46.27
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    Availability: Back Order (No charges until it ships)
    Anderson Manufacturing Item #: ANDM AM-21-BUFFER-KIT-308 -

      Our Aluminum 6 Position Anodized Buffer Tube Kit contains the correct weight Spring, End Plate, Buffer, Buffer Spacer and Castle Nut.

      AM-15 Buffer ? Rifle Length
      Anderson Manufacturing
      Retail: $11.67
      Price: $9.57
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      Availability: Back Order (No charges until it ships)
      Anderson Manufacturing Item #: ANDM AM-17 -

        AM-15 Buffer Spring ? Carbine Length
        Anderson Manufacturing
        Retail: $2.55
        Price: $2.42
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        Availability: Back Order (No charges until it ships)
        Anderson Manufacturing Item #: ANDM D2-K020-A000 -

          AM-15 Buffer Tube ? Pistol Length
          Anderson Manufacturing
          Retail: $21.20
          Price: $20.14
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          Availability: Back Order (No charges until it ships)
          Anderson Manufacturing Item #: ANDM D2-K021-B000 -

            AM-15 Buffer Tube Kit ? Pistol
            Anderson Manufacturing
            Retail: $45.99
            Price: $39.14
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            Availability: In Stock
            Anderson Manufacturing Item #: ANDM G2-K430-B000 -

              AR Carbine Buffer Spring
              TAPCO
              Retail: $8.99
              Price: $7.19
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              Availability: Special Order
              TAPCO Item #: TAP 16620 -

                When building your AR you need to make sure you have all the best components. With this high strength stainless steel Carbine Buffer Spring you can check one of those components off your list. This is the same great spring found in our Mil-Spec AR T6� Stock Assembly and is made in the U.S.A.

                AR Carbine Castle Nut
                TAPCO
                Retail: $7.99
                Price: $6.39
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                Availability: In Stock
                TAPCO Item #: TAP 16621 -

                  Machined from 4140 steel with a manganese phosphate coating, the INTRAFUSE� Castle Nut is an excellent replacement part or is ideal when building new rifles.

                  AR Carbine Mil-Spec Receiver Extension Tube
                  TAPCO
                  Retail: $29.99
                  Price: $23.99
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                  Availability: Special Order
                  TAPCO Item #: TAP 16630 -

                    Whether you're building from the ground up, or replacing existing parts on your Mil-Spec stock, this is the receiver extension tube you need. This part is 100% U.S. made and backed by TAPCO's lifetime guarantee.

                    AR Receiver Extension Build Kit - Mil-Spec Profile
                    TAPCO
                    Retail: $59.99
                    Price: $47.99
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                    Availability: Special Order
                    TAPCO Item #: TAP 16809 -

                      Whether you're building from the ground up, or replacing existing parts, this is the receiver extension build kit you need. Includes M4 Buffer Tube, Castle Nut, TAPCO End Plate Sling Adaptor, Buffer, and Recoil Spring. Available in Mil-Spec Profile

                      AR15 Rifle Buffer Kit, No Stock
                      Aero Precision
                      Price: $38.99
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                      Availability: Back Order (No charges until it ships)
                      Aero Precision Item #: AERO APRH100298 -

                        AR15/M4 Enhanced Pistol Buffer Kit
                        Aero Precision
                        Price: $50.00
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                        Availability: In Stock
                        Aero Precision Item #: AERO APRH100247C -

                          Carbine Buffer
                          Lewis Machine & Tool
                          Retail: $15.00
                          Price: $13.50
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                          Availability: Special Order
                          Lewis Machine & Tool Item #: LMT L7A2F -

                            Standard Carbine Buffer, best used with semi-auto 5.56 direct impingement rifle systems.

                            ERGO Carbine Action Spring
                            Ergo
                            Retail: $8.50
                            Price: $7.50
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                            Availability: In Stock
                            Ergo Item #: ERGO 4960 -

                              The ERGO Carbine Action Spring is a carbine length action spring for AR15 and M4 Adjustable Stocks, made to M4A1 Mil-Spec specifications.

                              ERGO Carbine Buffer Assembly
                              Ergo
                              Retail: $18.50
                              Price: $16.50
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                              Availability: In Stock
                              Ergo Item #: ERGO 4961 -

                                The ERGO Carbine Buffer Assembly is for use with an A-4 Collapsible Buttstock such as the ERGO F93 ProStock

                                H9, HEAVY BUFFER
                                SureFire
                                Retail: $249.00
                                Price: $224.00
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                                Availability: Back Order (No charges until it ships)
                                SureFire Item #: SUFC H9 -

                                  Heavy Carbine Buffer
                                  Lewis Machine & Tool
                                  Retail: $39.00
                                  Price: $31.50
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                                  Availability: In Stock
                                  Lewis Machine & Tool Item #: LMT L7CB2F -

                                    Heavy Carbine buffer. Reduces cyclic rate of fire and increases reliability

                                    Receiver Extension Lock Nut (Castle Nut) ar15 build set, ar15 lower build, ar15 lower build kit, ar15 castle nut, aero precision, aero precision parts, ar15 receiver extension lock nut, ar15 castle nut
                                    Aero Precision
                                    Retail: $3.49
                                    Price: $2.97
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                                    Availability: In Stock
                                    Aero Precision Item #: AERO APRH100082C -

                                      Super 42 Braided Wire Buffer Spring and Buffer Combo
                                      Geissele
                                      Price: $65.00
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                                      Availability: In Stock
                                      Geissele Item #: GEIS 05-495 -

                                        The Geissele Super 42 Spring was designed to improve the function and reliability of your AR-15 pattern rifle. Its unique spring design uses three independent strands of wire, just like the German MG42 Machine Gun. This concept acts as a harmonic damper and energy absorber by allowing the springs to flex separately from each other. This flex helps displace excess energy which decreases the chance of spring failure and assists with making your AR-15 more reliable.Compared to the stock spring,...

                                        True Mil-Spec Buffer Tube
                                        ALG Defense
                                        Price: $38.00-$65.00
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                                        Availability: Back Order (No charges until it ships)
                                        ALG Defense Item #: ALG 08-10 -

                                          ALG Defense's True Mil-Spec Buffer Tube is forged from 7075-T6 aluminum and is nearly double the strength of 6061-T6 aluminum found in most other Mil-spec and commercial buffer tube variants. A dry film lubricant is applied to the buffer tube, which creates a semi-permanent application of solid lubricant for maximum wear resistance. Built by the Tier One supplier for military contractors of the M4 Carbine, these are the superior buffer tubes that military and law enforcement officers entrust...

                                          ULTRALIGHT QD ENDPLATE FOR AR15/M16 qd endplate, ar-15 endplate qd, qd receiver endplate, qd socket endplate, ar-15 qd endplate
                                          New!
                                          Radian Weapons
                                          Retail: $25.95
                                          Price: $24.65
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                                          Availability: Back Order (No charges until it ships)
                                          Radian Weapons Item #: RADI R0078 -

                                            Radian Weapons QD End Plate for AR15/M16 RiflesAnnouncing the Ultralight QD Endplate for AR15/M16 pattern rifles. Weighing only 6.5 grams, the endplate is machined from billet 7075-T6 aluminum with milspec Type III anodized finish and a press-fit Titanium QD sling swivel cup. This combination of materials and finishes is ideal for weight reduction that doesn’t sacrifice durability or performance. Compatible with both milspec and commercial carbine buffer tubes, requires Castle Nut for...